GHK Cu Peptides Serum TryDeloura Most skincare stays on the surface., GHK Cu works deepersupporting your skin at the cellular level without the irritation cycle of retinol., No redness., No downtime., Just real support where it ION BLUE's Video on X Anti Aging Skincare Retinol & GHK Cu Peptide Solutions Beyond Basix I was super skeptical because I've literally tried everything Retinol destroyed my skin. Vitamin C oxidized and stung. Four different peptide serums and nothing actually worked. Then I tried GHK Cu. 6 weeks Ghk Cu Vs Retinol For Collagen